/*
   Spatial Measurement — page-local UX experience layer.
   The shared Maker Meik shell stays intact; this route turns the case body
   into a physical/digital handshake: ink field, indigo signal, authored proof.
*/

.spatial-app {
  --spatial-paper: var(--paper-100);
  --spatial-paper-deep: var(--paper-200);
  --spatial-ink: var(--surface-inverse-bg);
  --spatial-on-ink: var(--surface-inverse-fg);
  --spatial-on-ink-strong: var(--surface-inverse-fg-strong);
  --spatial-indigo: var(--ux-base);
  --spatial-indigo-deep: var(--ux-deep);
  --spatial-indigo-soft: var(--ux-soft);
  --spatial-indigo-tint: var(--ux-tint);
  --spatial-indigo-wash: var(--ux-wash);
  --spatial-line: var(--border);
  background: var(--spatial-paper);
}

/* The shared footer still exposes Cookie settings; avoid a floating pill
   covering this route's long-form hero copy. */
.spatial-route #mm-consent-root .mm-consent-settings {
  display: none;
}

.spatial-case,
.spatial-case *,
.spatial-case *::before,
.spatial-case *::after {
  box-sizing: border-box;
}

.spatial-case {
  overflow: clip;
  background: var(--spatial-paper);
  color: var(--fg);
}

.spatial-case [id],
.spatial-footer-shell [id] {
  scroll-margin-top: 7rem;
}

.spatial-case__shell,
.spatial-footer-shell__back {
  width: min(100%, var(--page-max));
  margin: 0 auto;
  padding-right: var(--page-x);
  padding-left: var(--page-x);
}

.spatial-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding-top: var(--space-5);
  padding-bottom: var(--space-4);
  color: var(--fg-muted);
  font-size: var(--fs-body-sm);
  line-height: 1.4;
}

.spatial-breadcrumb a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: .25em;
}

.spatial-breadcrumb a:hover,
.spatial-breadcrumb a:focus-visible {
  color: var(--spatial-indigo-deep);
  text-decoration: underline;
}

.spatial-breadcrumb__current {
  color: var(--fg);
  font-weight: 700;
}

.spatial-breadcrumb__separator {
  color: var(--spatial-indigo);
  font-weight: 800;
}

.spatial-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(22rem, 1fr);
  gap: clamp(2rem, 4vw, 5rem);
  align-items: center;
  min-height: min(48rem, calc(100vh - 6rem));
  padding: clamp(3.5rem, 7vw, 7rem) max(var(--page-x), calc((100vw - var(--page-max)) / 2 + var(--page-x)));
  overflow: hidden;
  background: var(--spatial-ink);
  color: var(--spatial-on-ink);
}

.spatial-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .54;
  background-image:
    linear-gradient(color-mix(in srgb, var(--spatial-indigo-soft) 13%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--spatial-indigo-soft) 13%, transparent) 1px, transparent 1px);
  background-size: 5rem 5rem;
  mask-image: linear-gradient(90deg, black, transparent 78%);
}

.spatial-hero::after {
  content: "";
  position: absolute;
  right: -12rem;
  bottom: -18rem;
  width: 38rem;
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--spatial-indigo-soft) 26%, transparent);
  border-radius: 50%;
  box-shadow:
    0 0 0 4rem color-mix(in srgb, var(--spatial-indigo-soft) 5%, transparent),
    0 0 0 9rem color-mix(in srgb, var(--spatial-indigo-soft) 3%, transparent);
  pointer-events: none;
}

.spatial-hero__copy,
.spatial-hero__visual {
  position: relative;
  z-index: 1;
}

.spatial-hero__copy {
  max-width: 42rem;
}

.spatial-hero h1 {
  max-width: none;
  margin: 0;
  color: var(--spatial-on-ink-strong);
  font: 800 var(--fs-display-l)/.91 var(--font-display);
  letter-spacing: -.045em;
  text-wrap: balance;
}

.spatial-hero h1 em {
  color: var(--spatial-indigo-soft);
  font-style: normal;
}

.spatial-hero__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  color: var(--spatial-indigo-soft);
  font: 700 var(--fs-body-sm)/1.3 var(--font-body);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.spatial-hero__status::before {
  content: "";
  width: .65rem;
  height: .65rem;
  flex: 0 0 auto;
  border: 2px solid var(--spatial-indigo-soft);
  border-radius: 50%;
  box-shadow: 0 0 0 .3rem color-mix(in srgb, var(--spatial-indigo) 20%, transparent);
}

.spatial-hero__lead {
  max-width: 34rem;
  margin: var(--space-6) 0 0;
  color: color-mix(in srgb, var(--spatial-on-ink) 84%, transparent);
  font-size: var(--fs-body);
  line-height: 1.65;
  text-wrap: pretty;
}

.spatial-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.spatial-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 3.25rem;
  padding: .75rem 1.1rem;
  border: 1px solid currentColor;
  border-radius: var(--radius-pill);
  color: var(--spatial-on-ink-strong);
  font: 800 var(--fs-body-sm)/1.2 var(--font-body);
  text-decoration: none;
  transition: transform var(--dur-base) var(--ease-out), background-color var(--dur-base), border-color var(--dur-base), color var(--dur-base);
}

.spatial-button svg {
  width: 1.15rem;
  height: 1.15rem;
  flex: 0 0 auto;
}

.spatial-button:hover {
  transform: translateY(-2px);
}

.spatial-button:focus-visible,
.spatial-state-button:focus-visible,
.spatial-media__button:focus-visible,
.spatial-lightbox__close:focus-visible,
.spatial-footer-back a:focus-visible {
  outline: 3px solid var(--spatial-indigo-soft);
  outline-offset: 4px;
}

.spatial-button--primary {
  border-color: var(--spatial-indigo);
  background: var(--spatial-indigo);
  color: var(--spatial-on-ink-strong);
}

.spatial-button--primary:hover {
  border-color: var(--spatial-indigo-soft);
  background: var(--spatial-indigo-deep);
}

.spatial-button--quiet {
  border-color: color-mix(in srgb, var(--spatial-on-ink) 48%, transparent);
  color: var(--spatial-on-ink);
}

.spatial-button--quiet:hover {
  border-color: var(--spatial-on-ink-strong);
  background: var(--spatial-on-ink-strong);
  color: var(--spatial-ink);
}

.spatial-hero__facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: clamp(3rem, 6vw, 5rem);
  padding-top: var(--space-5);
  border-top: 1px solid color-mix(in srgb, var(--spatial-on-ink) 20%, transparent);
}

.spatial-hero__fact {
  min-width: 0;
}

.spatial-hero__fact-label {
  display: block;
  color: color-mix(in srgb, var(--spatial-on-ink) 56%, transparent);
  font: 700 var(--fs-eyebrow)/1.3 var(--font-body);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.spatial-hero__fact-value {
  display: block;
  margin-top: var(--space-2);
  color: var(--spatial-on-ink-strong);
  font: 700 var(--fs-body-sm)/1.35 var(--font-body);
  overflow-wrap: anywhere;
}

.spatial-hero__visual {
  --spatial-pointer-x: 0px;
  --spatial-pointer-y: 0px;
  transform: translate3d(var(--spatial-pointer-x), var(--spatial-pointer-y), 0);
  transition: transform var(--dur-slow) var(--ease-out);
}

@media (min-width: 1001px) {
  .spatial-hero__visual {
    transform: translate3d(var(--spatial-pointer-x), calc(var(--spatial-pointer-y) - 1.5rem), 0);
  }
}

.spatial-hero__visual-frame {
  position: relative;
  padding: clamp(.55rem, 1.2vw, 1rem);
  border: 1px solid color-mix(in srgb, var(--spatial-indigo-soft) 55%, transparent);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--spatial-indigo) 10%, var(--spatial-ink));
  box-shadow: 0 2rem 5rem color-mix(in srgb, var(--spatial-ink) 58%, transparent);
}

.spatial-hero__visual-frame::before {
  content: "";
  position: absolute;
  inset: .55rem;
  border: 1px solid color-mix(in srgb, var(--spatial-on-ink) 12%, transparent);
  border-radius: calc(var(--radius-xl) - .35rem);
  pointer-events: none;
}

.spatial-hero__image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-xl) - .35rem);
}

.spatial-hero__marker {
  position: absolute;
  right: 8%;
  top: 8%;
  right: 6%;
  display: grid;
  width: clamp(4.25rem, 10vw, 7rem);
  aspect-ratio: 1;
  place-items: center;
  border: .45rem solid var(--spatial-on-ink-strong);
  background: var(--spatial-indigo);
  box-shadow: 0 .8rem 2rem color-mix(in srgb, var(--spatial-ink) 55%, transparent);
  color: var(--spatial-on-ink-strong);
  transform: rotate(-9deg);
  transition: transform var(--dur-slow) var(--ease-out);
}

.spatial-hero__marker::after {
  content: "";
  position: absolute;
  inset: .65rem;
  border: 2px solid color-mix(in srgb, var(--spatial-on-ink-strong) 84%, transparent);
}

.spatial-hero__marker span {
  position: relative;
  z-index: 1;
  font: 900 var(--fs-h3)/1 var(--font-body);
  letter-spacing: -.04em;
}

.spatial-hero__marker small {
  position: absolute;
  left: 50%;
  bottom: -1.9rem;
  transform: translateX(-50%);
  padding: .35rem .55rem;
  background: var(--spatial-ink);
  color: var(--spatial-indigo-soft);
  font: 800 var(--fs-micro)/1 var(--font-body);
  letter-spacing: .08em;
  white-space: nowrap;
}

.spatial-hero__marker-lock {
  position: absolute;
  inset: -.4rem;
  border: 2px solid transparent;
  border-radius: 4px;
  opacity: 0;
  transition: opacity var(--dur-base), border-color var(--dur-base);
}

.spatial-hero__visual[data-state="understand"] .spatial-hero__marker-lock,
.spatial-hero__visual[data-state="act"] .spatial-hero__marker-lock {
  border-color: var(--spatial-on-ink-strong);
  opacity: 1;
  animation: spatial-lock-pulse 1.6s var(--ease-out) infinite;
}

.spatial-hero__visual[data-state="see"] .spatial-hero__marker {
  transform: rotate(-9deg) scale(1.06);
}

@keyframes spatial-lock-pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--spatial-on-ink-strong) 45%, transparent); }
  50% { box-shadow: 0 0 0 .4rem color-mix(in srgb, var(--spatial-on-ink-strong) 0%, transparent); }
}

.spatial-hero__scan {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  border-radius: inherit;
}

.spatial-hero__scan::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 22%;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--spatial-indigo-soft) 55%, transparent), transparent);
  opacity: 0;
  transform: translateY(-100%);
}

.spatial-hero__visual[data-state="see"] .spatial-hero__scan::before {
  opacity: 1;
  animation: spatial-scan-sweep 1.6s var(--ease-out) infinite;
}

@keyframes spatial-scan-sweep {
  0% { transform: translateY(-30%); }
  100% { transform: translateY(480%); }
}

@media (prefers-reduced-motion: reduce) {
  .spatial-hero__marker-lock,
  .spatial-hero__scan::before {
    animation: none;
  }
  .spatial-hero__visual[data-state="see"] .spatial-hero__marker {
    transform: rotate(-9deg);
  }
}

.spatial-hero__signal {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  margin-top: var(--space-4);
  color: color-mix(in srgb, var(--spatial-on-ink) 62%, transparent);
  font: 700 var(--fs-body-sm)/1.3 var(--font-body);
}

.spatial-hero__signal-bar {
  height: .35rem;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--spatial-on-ink) 16%, transparent);
}

.spatial-hero__signal-bar span {
  display: block;
  width: 25%;
  height: 100%;
  border-radius: inherit;
  background: var(--spatial-indigo-soft);
  transition: width var(--dur-slow) var(--ease-out);
}

.spatial-hero__readout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border: 1px solid color-mix(in srgb, var(--spatial-on-ink) 17%, transparent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--spatial-ink) 75%, var(--spatial-indigo) 25%);
}

.spatial-hero__readout-label {
  display: block;
  color: var(--spatial-indigo-soft);
  font: 800 var(--fs-eyebrow)/1.3 var(--font-body);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.spatial-hero__readout-state {
  display: block;
  margin-top: .35rem;
  color: var(--spatial-on-ink-strong);
  font: 800 var(--fs-h3)/1.15 var(--font-display);
}

.spatial-hero__readout-action {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: .65rem .85rem;
  border: 1px solid color-mix(in srgb, var(--spatial-indigo-soft) 60%, transparent);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--spatial-on-ink-strong);
  font: 800 var(--fs-body-sm)/1.2 var(--font-body);
  cursor: pointer;
  transition: background-color var(--dur-base), border-color var(--dur-base), transform var(--dur-base);
}

.spatial-hero__readout-action:hover {
  border-color: var(--spatial-indigo-soft);
  background: var(--spatial-indigo);
  transform: translateY(-2px);
}

.spatial-hero__readout-action svg {
  width: 1rem;
  height: 1rem;
}

.spatial-chapter-nav {
  position: sticky;
  top: 5rem;
  z-index: 10;
  overflow-x: auto;
  border-top: 1px solid var(--spatial-line);
  border-bottom: 1px solid var(--spatial-line);
  background: var(--spatial-paper);
}
.spatial-chapter-nav::after {
  content: "";
  position: sticky;
  right: 0;
  flex: 0 0 2.5rem;
  align-self: stretch;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--spatial-paper) 78%);
}

.spatial-chapter-nav__inner {
  display: flex;
  width: min(100%, var(--page-max));
  min-width: max-content;
  margin: 0 auto;
  padding-right: var(--page-x);
  padding-left: var(--page-x);
}

.spatial-chapter-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 3rem;
  padding: 0 var(--space-4);
  border-right: 1px solid var(--spatial-line);
  color: var(--fg-muted);
  font: 800 var(--fs-body-sm)/1.2 var(--font-body);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .18s ease, color .18s ease, box-shadow .18s ease;
}

.spatial-chapter-nav a:first-child {
  border-left: 1px solid var(--spatial-line);
}

.spatial-chapter-nav a span {
  color: var(--spatial-indigo);
  font-weight: 900;
}

.spatial-chapter-nav a:hover,
.spatial-chapter-nav a.is-active {
  background: var(--spatial-ink);
  color: var(--spatial-on-ink-strong);
  box-shadow: inset 0 -3px var(--spatial-indigo);
}
.spatial-chapter-nav a:hover:not(.is-active) {
  background: var(--spatial-indigo-wash);
  color: var(--fg);
}
.spatial-chapter-nav a.is-active span {
  color: var(--spatial-indigo-soft);
}
.spatial-chapter-nav a:focus-visible {
  outline: 3px solid var(--spatial-indigo);
  outline-offset: -3px;
}

.spatial-section {
  padding: clamp(4.5rem, 9vw, 8rem) max(var(--page-x), calc((100vw - var(--page-max)) / 2 + var(--page-x)));
  border-bottom: 1px solid var(--spatial-line);
}

.spatial-section--ink {
  background: var(--spatial-ink);
  color: var(--spatial-on-ink);
  border-bottom-color: var(--spatial-ink);
}
.spatial-states {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.spatial-states::before {
  position: absolute;
  inset: -3%;
  z-index: 0;
  background-image:
    linear-gradient(90deg, rgba(15,15,22,.94) 0%, rgba(15,15,22,.78) 48%, rgba(15,15,22,.88) 100%),
    var(--spatial-cubes-bg);
  background-position: center, center 68%;
  background-size: cover;
  content: "";
  filter: saturate(.58) contrast(.92) blur(1px);
  opacity: .7;
  transform: scale(1.03);
}
.spatial-states > * {
  position: relative;
  z-index: 1;
}

.spatial-section--wash {
  background: var(--spatial-indigo-wash);
}

.spatial-section__heading-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-5);
  align-items: end;
  margin-bottom: var(--space-6);
}

.spatial-section__heading-row h2 {
  max-width: 12ch;
  margin: 0;
  font: 800 var(--fs-display-m)/.98 var(--font-display);
  letter-spacing: -.04em;
  text-wrap: balance;
}

.spatial-section__heading-row > span {
  padding-bottom: .35rem;
  color: var(--spatial-indigo-deep);
  font: 800 var(--fs-body-sm)/1.3 var(--font-body);
  letter-spacing: .1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.spatial-section--ink .spatial-section__heading-row > span {
  color: var(--spatial-indigo-soft);
}

.spatial-section--ink .spatial-section__heading-row h2 {
  color: var(--spatial-on-ink-strong);
}

.spatial-section__lead {
  max-width: 64ch;
  margin: 0;
  color: var(--fg-muted);
  font-size: var(--fs-body);
  line-height: 1.68;
  text-wrap: pretty;
}

.spatial-section--ink .spatial-section__lead,
.spatial-section--ink p {
  color: color-mix(in srgb, var(--spatial-on-ink) 80%, transparent);
}

.spatial-constraint__grid,
.spatial-response__grid,
.spatial-method__grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(18rem, 1.1fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: center;
}

.spatial-constraint__copy {
  max-width: 42rem;
}

.spatial-constraint__copy .spatial-section__heading-row {
  margin-bottom: var(--space-5);
}

.spatial-constraint__note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3) var(--space-4);
  align-items: baseline;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 2px solid var(--spatial-indigo);
}

.spatial-constraint__note strong {
  color: var(--spatial-indigo-deep);
  font: 800 var(--fs-h3)/1.1 var(--font-display);
}

.spatial-constraint__note span {
  color: var(--fg-muted);
  font-size: var(--fs-body-sm);
  line-height: 1.5;
}

.spatial-media {
  min-width: 0;
  margin: 0;
}

.spatial-media__button {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius-xl);
  background: var(--spatial-paper-deep);
  color: inherit;
  cursor: zoom-in;
}

.spatial-media__button img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform var(--dur-slow) var(--ease-out), filter var(--dur-slow) var(--ease-out);
}

.spatial-media__button:hover img {
  filter: saturate(1.08);
  transform: scale(1.025);
}

.spatial-media__expand {
  position: absolute;
  right: var(--space-4);
  bottom: var(--space-4);
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--spatial-ink) 86%, transparent);
  color: var(--spatial-on-ink-strong);
  opacity: 0;
  transform: translateY(.35rem);
  transition: opacity var(--dur-base), transform var(--dur-base);
}

.spatial-media__button:hover .spatial-media__expand,
.spatial-media__button:focus-visible .spatial-media__expand {
  opacity: 1;
  transform: translateY(0);
}

.spatial-media__expand svg {
  width: 1.1rem;
  height: 1.1rem;
}

.spatial-media figcaption {
  margin-top: var(--space-3);
  color: var(--fg-subtle);
  font-size: var(--fs-body-sm);
  line-height: 1.5;
  text-wrap: pretty;
}

.spatial-section--ink .spatial-media figcaption {
  color: color-mix(in srgb, var(--spatial-on-ink) 62%, transparent);
}

.spatial-states__layout {
  display: grid;
  grid-template-columns: minmax(13rem, .64fr) minmax(0, 1.36fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: start;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.spatial-state-nav {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.spatial-state-button {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  width: 100%;
  min-height: 3.75rem;
  padding: var(--space-3) var(--space-4);
  border: 1px solid color-mix(in srgb, var(--spatial-on-ink) 16%, transparent);
  border-radius: var(--radius-md);
  background: transparent;
  color: color-mix(in srgb, var(--spatial-on-ink) 72%, transparent);
  font: 800 var(--fs-body-sm)/1.25 var(--font-body);
  text-align: left;
  cursor: pointer;
  transition: background-color var(--dur-base), color var(--dur-base), border-color var(--dur-base), transform var(--dur-base);
}

.spatial-state-button:hover {
  border-color: color-mix(in srgb, var(--spatial-indigo-soft) 70%, transparent);
  color: var(--spatial-on-ink-strong);
  transform: translateX(.35rem);
}

.spatial-state-button[aria-pressed="true"] {
  border-color: var(--spatial-indigo);
  background: var(--spatial-indigo);
  color: var(--spatial-on-ink-strong);
  transform: translateX(.55rem);
}

.spatial-state-button__number {
  color: var(--spatial-indigo-soft);
  font: 900 var(--fs-stat)/1 var(--font-body);
}

.spatial-state-button svg {
  width: 1.05rem;
  height: 1.05rem;
  transition: transform var(--dur-base);
}

.spatial-state-button[aria-pressed="true"] svg {
  transform: translateX(.2rem);
}

.spatial-state-readout {
  min-height: 19rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid color-mix(in srgb, var(--spatial-indigo-soft) 38%, transparent);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--spatial-indigo) 18%, transparent), transparent 60%),
    color-mix(in srgb, var(--spatial-ink) 78%, var(--spatial-indigo) 22%);
}

.spatial-state-readout__signal {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--spatial-indigo-soft);
  font: 800 var(--fs-body-sm)/1.3 var(--font-body);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.spatial-state-readout__signal::before {
  content: "";
  width: .7rem;
  height: .7rem;
  border-radius: 50%;
  background: var(--spatial-indigo-soft);
  box-shadow: 0 0 0 .35rem color-mix(in srgb, var(--spatial-indigo) 22%, transparent);
}

.spatial-state-readout h3 {
  max-width: 12ch;
  margin: var(--space-5) 0 var(--space-4);
  color: var(--spatial-on-ink-strong);
  font: 800 var(--fs-display-m)/.98 var(--font-display);
  letter-spacing: -.04em;
}

.spatial-state-readout p {
  max-width: 52ch;
  margin: 0;
  color: color-mix(in srgb, var(--spatial-on-ink) 78%, transparent);
  font-size: var(--fs-body);
  line-height: 1.65;
}

.spatial-state-readout__footer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: center;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid color-mix(in srgb, var(--spatial-on-ink) 16%, transparent);
  color: color-mix(in srgb, var(--spatial-on-ink) 62%, transparent);
  font-size: var(--fs-body-sm);
}

.spatial-state-readout__line {
  height: .35rem;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--spatial-on-ink) 15%, transparent);
}

.spatial-state-readout__line span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--spatial-indigo-soft);
  transition: width var(--dur-slow) var(--ease-out);
}

.spatial-evidence__points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.spatial-data-point {
  min-width: 0;
  padding-top: var(--space-4);
  border-top: 2px solid var(--spatial-indigo);
}

.spatial-data-point__value {
  display: block;
  color: var(--spatial-indigo-deep);
  font: 800 var(--fs-display-m)/.95 var(--font-display);
  letter-spacing: -.04em;
  overflow-wrap: anywhere;
}

.spatial-data-point__bar {
  height: .4rem;
  margin: var(--space-4) 0 var(--space-4);
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--spatial-indigo-tint);
}

.spatial-data-point__bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--spatial-indigo);
  transition: width .9s var(--ease-out);
}

.spatial-case.is-enhanced .spatial-data-point__bar span {
  width: var(--spatial-data-width);
}

.spatial-data-point p {
  max-width: 30ch;
  margin: 0;
  color: var(--fg);
  font-size: var(--fs-body-sm);
  line-height: 1.5;
}

.spatial-data-point small {
  display: block;
  margin-top: var(--space-3);
  color: var(--fg-subtle);
  font: 400 var(--fs-body-sm)/1.45 var(--font-body);
}

.spatial-findings {
  display: grid;
  grid-template-columns: minmax(16rem, .65fr) minmax(0, 1.35fr);
  gap: clamp(2rem, 5vw, 5rem);
  margin-top: clamp(4rem, 8vw, 7rem);
  padding-top: var(--space-5);
  border-top: 1px solid var(--spatial-line);
}

.spatial-findings h3 {
  max-width: none;
  margin: 0;
  color: var(--fg);
  font: 800 var(--fs-h2)/1 var(--font-display);
  letter-spacing: -.035em;
  text-wrap: balance;
}

.spatial-findings ol {
  display: grid;
  gap: var(--space-5);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: spatial-finding;
}

.spatial-findings li {
  position: relative;
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: var(--space-4);
  color: var(--fg-muted);
  font-size: var(--fs-body);
  line-height: 1.65;
  counter-increment: spatial-finding;
}

.spatial-findings li::before {
  content: counter(spatial-finding, decimal-leading-zero);
  color: var(--spatial-indigo);
  font: 900 var(--fs-body-sm)/1.65 var(--font-body);
}

.spatial-response {
  background: var(--spatial-indigo-wash);
}

.spatial-response__grid {
  grid-template-columns: minmax(18rem, 1.14fr) minmax(0, .86fr);
}

.spatial-response__copy {
  max-width: 36rem;
}

.spatial-response__copy h2 {
  max-width: 9ch;
  margin: 0;
  color: var(--spatial-ink);
  font: 800 var(--fs-display-l)/.93 var(--font-display);
  letter-spacing: -.045em;
}

.spatial-response__copy p {
  margin: var(--space-5) 0 0;
  color: color-mix(in srgb, var(--spatial-ink) 74%, transparent);
  font-size: var(--fs-body);
  line-height: 1.65;
}

.spatial-response__rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 2px solid var(--spatial-indigo);
}

.spatial-response__rule strong {
  color: var(--spatial-indigo-deep);
  font: 800 var(--fs-h3)/1.1 var(--font-display);
}

.spatial-response__rule span {
  color: color-mix(in srgb, var(--spatial-ink) 68%, transparent);
  font-size: var(--fs-body-sm);
  line-height: 1.5;
}

.spatial-response .spatial-media__button {
  border: 1px solid color-mix(in srgb, var(--spatial-indigo) 30%, transparent);
  background: var(--spatial-paper);
  box-shadow: var(--shadow-3);
}

.spatial-exploration {
  background: var(--spatial-ink);
  color: var(--spatial-on-ink);
}

.spatial-exploration__lead {
  max-width: 36rem;
}

.spatial-exploration__feature {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(17rem, .65fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
  margin-top: clamp(3rem, 6vw, 5rem);
}

.spatial-exploration__feature .spatial-media {
  min-width: 0;
  width: 100%;
}

.spatial-exploration__feature .spatial-media__button {
  border: 1px solid color-mix(in srgb, var(--spatial-indigo-soft) 42%, transparent);
  background: color-mix(in srgb, var(--spatial-indigo) 15%, var(--spatial-ink));
}

.spatial-exploration__statement {
  max-width: 24rem;
  padding: var(--space-5) 0;
  border-top: 1px solid color-mix(in srgb, var(--spatial-on-ink) 18%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--spatial-on-ink) 18%, transparent);
}

.spatial-exploration__statement strong {
  display: block;
  max-width: 17ch;
  color: var(--spatial-on-ink-strong);
  font: 800 var(--fs-h2)/1 var(--font-display);
  letter-spacing: -.035em;
}

.spatial-exploration__statement p {
  margin: var(--space-5) 0 0;
  color: color-mix(in srgb, var(--spatial-on-ink) 70%, transparent);
  font-size: var(--fs-body-sm);
  line-height: 1.6;
}

.spatial-exploration__grid-art {
  width: min(100%, 64rem);
  margin: clamp(4rem, 8vw, 7rem) auto 0;
  opacity: .9;
}

.spatial-method {
  background: var(--spatial-paper-deep);
}

.spatial-method__grid {
  grid-template-columns: minmax(18rem, .92fr) minmax(0, 1.08fr);
}

.spatial-method__copy {
  max-width: 40rem;
}

.spatial-method__copy h2 {
  max-width: 10ch;
  margin: 0;
  font: 800 var(--fs-display-m)/.98 var(--font-display);
  letter-spacing: -.04em;
}

.spatial-method__copy p {
  margin: var(--space-5) 0 0;
  color: var(--fg-muted);
  font-size: var(--fs-body);
  line-height: 1.68;
}

.spatial-method__proof {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
  margin-top: var(--space-6);
  padding: var(--space-4) 0 0;
  border-top: 2px solid var(--spatial-indigo);
}

.spatial-method__proof-mark {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 50%;
  background: var(--spatial-indigo);
  color: var(--spatial-on-ink-strong);
  font: 900 var(--fs-body-sm)/1 var(--font-body);
}

.spatial-method__proof-mark svg {
  width: 1.1rem;
  height: 1.1rem;
  transform: rotate(-45deg);
}

.spatial-method__proof p {
  margin: 0;
  color: var(--fg);
  font-size: var(--fs-body-sm);
  line-height: 1.5;
}

.spatial-method .spatial-media__button {
  border: 1px solid var(--spatial-line);
  background: var(--spatial-paper);
  box-shadow: var(--shadow-2);
}

.spatial-close {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, .7fr);
  gap: clamp(2rem, 8vw, 8rem);
  align-items: end;
  padding: clamp(4.5rem, 9vw, 8rem) max(var(--page-x), calc((100vw - var(--page-max)) / 2 + var(--page-x)));
  background: var(--spatial-indigo);
  color: var(--spatial-on-ink-strong);
}

.spatial-close h2 {
  max-width: 8ch;
  margin: 0;
  font: 800 var(--fs-display-l)/.93 var(--font-display);
  letter-spacing: -.045em;
}

.spatial-close blockquote {
  max-width: 28ch;
  margin: var(--space-6) 0 0;
  color: var(--spatial-on-ink-strong);
  font: 600 var(--fs-h3)/1.35 var(--font-display);
  letter-spacing: -.02em;
}

.spatial-close__note {
  display: block;
  margin-top: var(--space-4);
  color: color-mix(in srgb, var(--spatial-on-ink-strong) 70%, transparent);
  font-size: var(--fs-body-sm);
  line-height: 1.55;
}

.spatial-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: flex-start;
}

.spatial-close .spatial-button--primary {
  background: var(--spatial-ink);
  border-color: var(--spatial-ink);
}

.spatial-close .spatial-button--primary:hover {
  background: var(--spatial-on-ink-strong);
  border-color: var(--spatial-on-ink-strong);
  color: var(--spatial-ink);
}

.spatial-close .spatial-button--quiet {
  border-color: color-mix(in srgb, var(--spatial-on-ink-strong) 65%, transparent);
}

.spatial-close .spatial-button--quiet:hover {
  background: var(--spatial-on-ink-strong);
  border-color: var(--spatial-on-ink-strong);
  color: var(--spatial-indigo-deep);
}

.spatial-footer-shell__back {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  border-top: 1px solid var(--border);
}

.spatial-footer-shell__back a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--fg);
  font: 800 var(--fs-body-sm)/1.3 var(--font-body);
  text-decoration: none;
}

.spatial-footer-shell__back a:hover {
  color: var(--spatial-indigo-deep);
}

.spatial-footer-shell__back svg {
  width: 1.15rem;
  height: 1.15rem;
  transform: rotate(180deg);
}

.spatial-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: grid;
  place-items: center;
  padding: var(--space-7);
  background: color-mix(in srgb, var(--spatial-ink) 94%, transparent);
  backdrop-filter: blur(10px);
}

.spatial-lightbox__dialog {
  position: relative;
  display: grid;
  justify-items: center;
  width: min(100%, 76rem);
  max-height: 100%;
  gap: var(--space-4);
}

.spatial-lightbox__image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: calc(100vh - 10rem);
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-3);
}

.spatial-lightbox__caption {
  max-width: 60ch;
  margin: 0;
  color: color-mix(in srgb, var(--spatial-on-ink-strong) 80%, transparent);
  font-size: var(--fs-body-sm);
  line-height: 1.5;
  text-align: center;
}

.spatial-lightbox__close {
  position: absolute;
  top: -3.25rem;
  right: 0;
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--spatial-on-ink-strong) 28%, transparent);
  border-radius: 50%;
  background: color-mix(in srgb, var(--spatial-on-ink-strong) 10%, transparent);
  color: var(--spatial-on-ink-strong);
  cursor: pointer;
}

.spatial-lightbox__close svg {
  width: 1.15rem;
  height: 1.15rem;
}

[data-spatial-reveal] {
  transform: translateY(0);
  clip-path: inset(0 0 0 0 round var(--radius-lg));
  transition: transform var(--dur-slow) var(--ease-out), clip-path var(--dur-slow) var(--ease-out);
}

.spatial-case.is-enhanced [data-spatial-reveal]:not(.is-visible) {
  transform: translateY(1rem);
  clip-path: inset(0 0 6% 0 round var(--radius-lg));
}

.spatial-case.is-enhanced [data-spatial-reveal].is-visible {
  transform: translateY(0);
  clip-path: inset(0 0 0 0 round var(--radius-lg));
}

@media (max-width: 1000px) {
  .spatial-hero {
    grid-template-columns: minmax(0, 1fr) minmax(18rem, .95fr);
    gap: var(--space-7);
  }

  .spatial-hero h1 {
    max-width: 14ch;
  }

  .spatial-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: var(--space-4);
  }

  .spatial-states__layout,
  .spatial-findings {
    gap: var(--space-7);
  }

  .spatial-exploration__feature {
    grid-template-columns: 1fr;
  }

  .spatial-exploration__feature .spatial-media,
  .spatial-exploration__statement {
    justify-self: stretch;
  }

  .spatial-exploration__statement {
    max-width: 42rem;
  }

  .spatial-exploration__grid-art {
    width: 100%;
  }
}

@media (max-width: 820px) {
  .spatial-hero,
  .spatial-constraint__grid,
  .spatial-response__grid,
  .spatial-method__grid,
  .spatial-exploration__feature,
  .spatial-close {
    grid-template-columns: 1fr;
  }

  .spatial-hero {
    min-height: 0;
    padding-top: var(--space-9);
    padding-bottom: var(--space-9);
  }

  .spatial-hero__copy {
    max-width: 44rem;
  }

  .spatial-hero__visual {
    order: -1;
    max-width: 48rem;
    margin-left: auto;
  }

  .spatial-constraint__grid,
  .spatial-response__grid,
  .spatial-method__grid {
    align-items: start;
  }

  .spatial-states__layout {
    grid-template-columns: 1fr;
  }

  .spatial-state-nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .spatial-state-button {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .spatial-state-button svg {
    display: none;
  }

  .spatial-state-button[aria-pressed="true"],
  .spatial-state-button:hover {
    transform: translateY(-2px);
  }

  .spatial-findings {
    grid-template-columns: 1fr;
  }

  .spatial-findings h3 {
    max-width: none;
  }

  .spatial-close__actions {
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  .spatial-case__shell,
  .spatial-footer-shell__back {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .spatial-breadcrumb {
    padding-top: var(--space-4);
    padding-bottom: var(--space-3);
  }

  .spatial-hero,
  .spatial-section,
  .spatial-close {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .spatial-hero {
    gap: var(--space-6);
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .spatial-hero h1,
  .spatial-response__copy h2,
  .spatial-close h2 {
    font-size: var(--fs-display-m);
  }

  .spatial-hero h1 {
    max-width: 12ch;
  }

  .spatial-hero__lead {
    font-size: var(--fs-body-sm);
  }

  .spatial-hero__facts {
    margin-top: var(--space-7);
  }

  .spatial-hero__readout {
    align-items: flex-start;
    flex-direction: column;
  }

  .spatial-chapter-nav {
    top: 3.9rem;
  }

  .spatial-chapter-nav__inner {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .spatial-chapter-nav a {
    min-height: 2.75rem;
    padding-right: var(--space-3);
    padding-left: var(--space-3);
  }

  .spatial-section {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .spatial-section__heading-row {
    display: flex;
    align-items: flex-start;
    flex-direction: column-reverse;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
  }

  .spatial-section__heading-row h2 {
    max-width: 11ch;
    font-size: var(--fs-h1);
  }

  .spatial-section__heading-row > span {
    padding-bottom: 0;
  }

  .spatial-section__lead,
  .spatial-constraint__copy p,
  .spatial-response__copy p,
  .spatial-method__copy p {
    font-size: var(--fs-body-sm);
  }

  .spatial-constraint__note,
  .spatial-response__rule,
  .spatial-method__proof {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .spatial-state-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spatial-state-button {
    min-height: 3.25rem;
    padding: var(--space-3);
  }

  .spatial-state-button__number {
    font-size: var(--fs-body-sm);
  }

  .spatial-state-readout {
    min-height: 0;
    padding: var(--space-5);
  }

  .spatial-state-readout h3 {
    max-width: 11ch;
    font-size: var(--fs-h1);
  }

  .spatial-state-readout__footer {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .spatial-evidence__points {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .spatial-data-point p {
    max-width: 42ch;
  }

  .spatial-exploration__statement strong {
    max-width: 16ch;
    font-size: var(--fs-h1);
  }

  .spatial-close {
    gap: var(--space-7);
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .spatial-close blockquote {
    font-size: var(--fs-h3);
  }

  .spatial-lightbox {
    padding: var(--space-4);
  }

  .spatial-lightbox__image {
    max-height: calc(100vh - 8rem);
  }

  .spatial-lightbox__close {
    top: -3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .spatial-hero__visual,
  .spatial-media__button img,
  .spatial-state-button,
  .spatial-hero__signal-bar span,
  .spatial-state-readout__line span,
  .spatial-data-point__bar span,
  [data-spatial-reveal] {
    transition: none;
  }

  .spatial-case.is-enhanced [data-spatial-reveal]:not(.is-visible),
  .spatial-case.is-enhanced [data-spatial-reveal].is-visible {
    transform: none;
    clip-path: none;
  }
}